Delhi Weather Update: Scattered Thunderstorms Temper Heat on August 20, 2026

Delhi experienced a mixed weather pattern on Thursday, August 20, 2026, as temperatures hovered around the seasonal average while scattered thunderstorms brought brief relief from the prevailing heat. The capital recorded a maximum temperature of 38°C (100.4°F) and a minimum of 28°C (82.4°F), with relative humidity ranging between 55% and 70% across the day. Meteorological officials from the India Meteorological Department (IMD) noted that the day’s conditions were typical for the late monsoon period, characterized by intermittent rain showers and occasional gusty winds reaching 30 km/h. Despite the rain, the overall heat index remained high, prompting health advisories for vulnerable populations.

According to the IMD’s 24‑hour forecast, the scattered thunderstorms are expected to subside by early evening, giving way to partly cloudy skies overnight. Temperatures are projected to dip to 26°C (78.8°F) by sunrise on Friday, while humidity will stay above 60%, maintaining a muggy atmosphere. The next 48 hours could see another bout of moderate rain on Saturday, with a cumulative rainfall of 12‑15 mm expected across the National Capital Region (NCR). The department cautions that sudden downpours may cause localized flooding in low‑lying areas, especially near the Yamuna floodplain.

Air quality remains a concern. The Delhi Pollution Control Committee (DPCC) reported an Air Quality Index (AQI) of 162 this morning, placing the city in the “unhealthy for sensitive groups” category. Particulate matter (PM2.5) concentrations hovered around 85 µg/m³, a figure that is roughly 30% higher than the same period last year. While the brief rain showers helped to cleanse the lower atmosphere, the persistent humidity and stagnant wind patterns are expected to keep pollutant levels elevated through the weekend.

commuters are advised to plan travel accordingly. The Delhi Metro and major roadways reported minor delays during the early‑morning showers, and the Delhi Traffic Police have warned of slippery conditions on arterial routes such as the Outer Ring Road and the Delhi‑Gurgaon Expressway. Public transport operators have increased the frequency of buses on high‑demand routes to accommodate commuters seeking alternatives to private vehicles.

The current weather aligns with historical trends for late August, when the monsoon’s retreat typically yields a mix of heat and rain. Climate analysts note that the region has experienced a gradual rise in average temperatures of 0.2°C per decade over the past 40 years, a shift that intensifies heat stress even during the monsoon. Residents are encouraged to stay hydrated, limit outdoor exertion during peak heat hours, and monitor AQI updates via official channels.

Overall, Thursday’s weather offered a temporary reprieve from Delhi’s sweltering summer, but the combination of high humidity, lingering pollutants, and the possibility of further rain underscores the need for continued vigilance among citizens and city officials alike.